vault: add vault container commands
adds commands:
* vaultcontainer-show [--service <service>|--user <user>|--shared ]
* vaultcontainer-del [--service <service>|--user <user>|--shared ]
* vaultcontainer-add-owner
[--service <service>|--user <user>|--shared ]
[--users <users>] [--groups <groups>] [--services <services>]
* vaultcontainer-remove-owner
[--service <service>|--user <user>|--shared ]
[--users <users>] [--groups <groups>] [--services <services>]
https://fedorahosted.org/freeipa/ticket/5250
Reviewed-By: Petr Vobornik <pvoborni@redhat.com>